fix: use testify instead of t.Fatal in tests/common package (part 2)

[mmorel-35]

Description

This uses testify instead of testing for t.Fatal calls

Related to #18972

[k8s-ci-robot]

Hi @mmorel-35. Thanks for your PR.

I'm waiting for a etcd-io member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[mmorel-35]

/assign @ahrtr

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.73%. Comparing base (40b856e) to head (44073ed).

Additional details and impacted files

see 21 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #18860      +/-   ##
==========================================
- Coverage   68.77%   68.73%   -0.05%     
==========================================
  Files         420      420              
  Lines       35642    35642              
==========================================
- Hits        24513    24498      -15     
- Misses       9703     9714      +11     
- Partials     1426     1430       +4     

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[jmhbnz]

/ok-to-test

[mmorel-35]

/test pull-etcd-integration-1-cpu-amd64

[mmorel-35]

I hold on this to apply gofumpt first

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahrtr, mmorel-35

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[mmorel-35]

/retest

[mmorel-35]

/retest